US4120703A - Method and apparatus for reducing smoke and preventing secondary fins during scarfing - Google Patents

Method and apparatus for reducing smoke and preventing secondary fins during scarfing Download PDF

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Publication number
US4120703A
US4120703A US05/828,204 US82820477A US4120703A US 4120703 A US4120703 A US 4120703A US 82820477 A US82820477 A US 82820477A US 4120703 A US4120703 A US 4120703A
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US
United States
Prior art keywords
scarfing
puddle
stream
fluid
directed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/828,204
Other languages
English (en)
Inventor
Stephen August Engel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ESAB AB
Original Assignee
Union Carbide Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Priority to ZA00776208A priority Critical patent/ZA776208B/xx
Priority to FR7732556A priority patent/FR2400985A1/fr
Priority to PH20387A priority patent/PH16020A/en
Priority to PL20183477A priority patent/PL201834A1/xx
Priority to NO773725A priority patent/NO152158C/no
Priority to IN356/DEL/77A priority patent/IN147788B/en
Priority to SE7712259A priority patent/SE433577B/sv
Priority to ES463752A priority patent/ES463752A1/es
Priority to HU77UI269A priority patent/HU176172B/hu
Priority to LU78418A priority patent/LU78418A1/xx
Priority to CS777078A priority patent/CS205094B2/cs
Priority to AT0777477A priority patent/AT379098B/de
Priority to GB45208/77A priority patent/GB1591746A/en
Priority to DE2748789A priority patent/DE2748789C3/de
Priority to YU2601/77A priority patent/YU39827B/xx
Priority to IT51643/77A priority patent/IT1090241B/it
Priority to SU772546152A priority patent/SU824883A3/ru
Priority to TR19979A priority patent/TR19979A/xx
Priority to JP12979977A priority patent/JPS5435849A/ja
Priority to BR7707262A priority patent/BR7707262A/pt
Priority to BE182263A priority patent/BE860373A/xx
Priority to AU30199/77A priority patent/AU511539B2/en
Priority to NL7711959A priority patent/NL7711959A/xx
Priority to MX171170A priority patent/MX147766A/es
Priority to AR269783A priority patent/AR214217A1/es
Priority to CA290,754A priority patent/CA1103568A/en
Priority to ES468879A priority patent/ES468879A1/es
Application granted granted Critical
Publication of US4120703A publication Critical patent/US4120703A/en
Priority to YU02052/82A priority patent/YU205282A/xx
Assigned to L-TEC COMPANY reassignment L-TEC COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNION CARBIDE CORPORATION
Assigned to SECURITY PACIFIC BUSINESS CREDIT INC., A DE CORP. reassignment SECURITY PACIFIC BUSINESS CREDIT INC., A DE CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: L-TEC COMPANY A NY LIMITED PARTNERSHIP
Assigned to L-TEC COMPANY reassignment L-TEC COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNION CARBIDE CORPORATION, A CORP OF NY.
Assigned to ESAB AB, A SWEDISH CORP. reassignment ESAB AB, A SWEDISH CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: L-TEC COMPANY
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K7/00—Cutting, scarfing, or desurfacing by applying flames
    • B23K7/06—Machines, apparatus, or equipment specially designed for scarfing or desurfacing

Definitions

  • non-reactive fluid as used throughout the specification and claims is intended to mean a fluid that will not react rapidly with the metal workpiece.
  • Water is the preferred non-reactive fluid for accomplishing both objectives, i.e., secondary fin prevention and smoke-control.
  • other useful non-reactive fluids include, for example: steam, water mist (i.e., a mixture of water and air), or mixtures of water and an inert gas such as nitrogen or argon.
  • the permissible puddle length may vary, depending upon the scarfing oxygen pressure, scarfing speed and depth of cut.
  • a stream of fluid striking the slag puddle at a distance of about 35 cm in front of the reaction zone has proven effective for secondary fin prevention.
  • the fluid stream is preferably a water jet at a pressure of at least 8.8 kg/cm 2 (gage) positioned above the scarfing oxygen stream to strike the slag puddle at an angle of about 45° relative to the work surface and directed in the direction of the oxygen stream.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)
US05/828,204 1975-08-29 1977-08-26 Method and apparatus for reducing smoke and preventing secondary fins during scarfing Expired - Lifetime US4120703A (en)

Priority Applications (28)

Application Number Priority Date Filing Date Title
ZA00776208A ZA776208B (en) 1977-08-26 1977-10-18 Method and apparatus for reducing smoke and preventing secondary fins during scarfing
FR7732556A FR2400985A1 (fr) 1977-08-26 1977-10-28 Procede et appareil d'ecriquage thermochimique
PH20387A PH16020A (en) 1977-08-26 1977-10-28 Method and apparatus for reducing smoke and preventing secondary fins during scarfing
PL20183477A PL201834A1 (pl) 1977-08-26 1977-10-29 Sposob zmniejszenia wydzielania dymu i zapobiegania tworzeniu sie wyplywek wtornych przy zlobieniu palnikiem oraz urzadzenie do stosowania tego sposobu
BR7707262A BR7707262A (pt) 1977-08-26 1977-10-31 Aperfeicoamento em processo de escarvagem termoquimica;e aperfeicoamento em aparelhagem para escarvar a superficie de um corpo metalico
SE7712259A SE433577B (sv) 1977-08-26 1977-10-31 Sett och anordning vid termokemisk maskinell gashyvling
ES463752A ES463752A1 (es) 1977-08-26 1977-10-31 Un procedimiento termoquimico de escarpado.
HU77UI269A HU176172B (en) 1977-08-26 1977-10-31 Process and equipment for thermochemical shaving of metal surfaces
LU78418A LU78418A1 (enrdf_load_stackoverflow) 1977-08-26 1977-10-31
CS777078A CS205094B2 (en) 1977-08-26 1977-10-31 Method of thermochemical descaling the workpiece and apparatus for executing the same
AT0777477A AT379098B (de) 1977-08-26 1977-10-31 Verfahren und vorrichtung zum thermochemischen flaemmen
GB45208/77A GB1591746A (en) 1977-08-26 1977-10-31 Method and apparatus for reducing smoke and/or preventing secondary fins during scarfing
DE2748789A DE2748789C3 (de) 1977-08-26 1977-10-31 Verfahren und Vorrichtung zum thermochemischen Flämmen
YU2601/77A YU39827B (en) 1977-08-26 1977-10-31 Device for reducing the quantity of smoke and preventing the generation of secondary edges at cleaning the surface of metals
IT51643/77A IT1090241B (it) 1977-08-26 1977-10-31 Metodo e apparecchio per ridurre il fumo e per evitare bave secondarie durante al scriccatura alla fiamma
SU772546152A SU824883A3 (ru) 1977-08-26 1977-10-31 Способ термохимической зачистки иуСТРОйСТВО дл ЕгО ОСущЕСТВлЕНи
NO773725A NO152158C (no) 1977-08-26 1977-10-31 Fremgangsmaate og anordning for termokjemisk flammehoevling
JP12979977A JPS5435849A (en) 1977-08-26 1977-10-31 Method and apparatus for preventing secondary fin by reducing smoke in weld machining
IN356/DEL/77A IN147788B (enrdf_load_stackoverflow) 1977-08-26 1977-10-31
BE182263A BE860373A (fr) 1977-08-26 1977-10-31 Procede et appareil d'ecriquage thermochimiques
AU30199/77A AU511539B2 (en) 1977-08-26 1977-10-31 Scarfing curtain
NL7711959A NL7711959A (nl) 1977-08-26 1977-10-31 Werkwijze en inrichting voor het thermochemisch bewerken van metalen.
MX171170A MX147766A (es) 1977-08-26 1977-10-31 Mejoras en metodo y aparato para el rectificado termoquimico de la superficie de un cuerpo metalico
AR269783A AR214217A1 (es) 1977-08-26 1977-10-31 Procedimiento termoquimico mejorado de escarpado
TR19979A TR19979A (tr) 1977-08-26 1977-10-31 Skarfing esnasinda dumanin aza masina ve sekonder capaklarin oenlenmes'ne mahsus usul ve cihaz
CA290,754A CA1103568A (en) 1977-08-26 1977-11-14 Method and apparatus for reducing smoke and preventing secondary fins during scarfing
ES468879A ES468879A1 (es) 1977-08-26 1978-04-17 Un aparato perfeccionado para el escarpado de una superfi- cie.
YU02052/82A YU205282A (en) 1977-08-26 1982-09-13 Method of thermochemically cleaning surfaces of metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60898775A 1975-08-29 1975-08-29

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US60898775A Continuation-In-Part 1975-08-29 1975-08-29

Publications (1)

Publication Number Publication Date
US4120703A true US4120703A (en) 1978-10-17

Family

ID=24438909

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/828,204 Expired - Lifetime US4120703A (en) 1975-08-29 1977-08-26 Method and apparatus for reducing smoke and preventing secondary fins during scarfing

Country Status (2)

Country Link
US (1) US4120703A (enrdf_load_stackoverflow)
IN (1) IN148393B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260433A (en) * 1977-11-24 1981-04-07 Centro-Maskin Goteborg Ab Method of forming and collecting slag products formed at a melting process, especially at gas planing
US4601762A (en) * 1983-01-20 1986-07-22 Centre De Recherches Metallurgiques-Centrum Voor Research In De Metallurgie Methods for conditioning metal products
US4765597A (en) * 1986-10-22 1988-08-23 L-Tec Company Scarfing nozzle

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218141A (en) * 1939-08-23 1940-10-15 Nat Tube Co Apparatus for removing fumes and solids in metal skinning equipment
US2284574A (en) * 1940-05-04 1942-05-26 Oxweld Acetylene Co Apparatus for cutting or deseaming metal
US2465297A (en) * 1943-12-30 1949-03-22 Linde Air Prod Co Process and apparatus for disposing of metal desurfacing products
US2664368A (en) * 1951-06-06 1953-12-29 Union Carbide & Carbon Corp External powder feed scarfing process and apparatus
US2754234A (en) * 1953-03-18 1956-07-10 Union Carbide & Carbon Corp Thermochemical metal removal
US2873224A (en) * 1955-05-06 1959-02-10 Union Carbide Corp Process and apparatus for desurfacing a refractory metal body
US3035947A (en) * 1959-12-30 1962-05-22 Union Carbide Corp Method of flame machining j-grooves
US3163559A (en) * 1957-11-12 1964-12-29 Union Carbide Corp Water jet method of deslagging a metal surface
US3354002A (en) * 1966-03-10 1967-11-21 Union Carbide Corp Thermochemical scarfing method
US3436276A (en) * 1966-05-19 1969-04-01 Union Carbide Corp Slag removal method during thermochemical scarfing
US3455747A (en) * 1966-09-14 1969-07-15 Union Carbide Corp Thermochemical scarfing method and apparatus
GB1457438A (en) 1972-12-19 1976-12-01 Matsushita Electric Ind Co Ltd Metal removal method using an electric arc and gas jet and apparatus therefor

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218141A (en) * 1939-08-23 1940-10-15 Nat Tube Co Apparatus for removing fumes and solids in metal skinning equipment
US2284574A (en) * 1940-05-04 1942-05-26 Oxweld Acetylene Co Apparatus for cutting or deseaming metal
US2465297A (en) * 1943-12-30 1949-03-22 Linde Air Prod Co Process and apparatus for disposing of metal desurfacing products
US2664368A (en) * 1951-06-06 1953-12-29 Union Carbide & Carbon Corp External powder feed scarfing process and apparatus
US2754234A (en) * 1953-03-18 1956-07-10 Union Carbide & Carbon Corp Thermochemical metal removal
US2873224A (en) * 1955-05-06 1959-02-10 Union Carbide Corp Process and apparatus for desurfacing a refractory metal body
US3163559A (en) * 1957-11-12 1964-12-29 Union Carbide Corp Water jet method of deslagging a metal surface
US3035947A (en) * 1959-12-30 1962-05-22 Union Carbide Corp Method of flame machining j-grooves
US3354002A (en) * 1966-03-10 1967-11-21 Union Carbide Corp Thermochemical scarfing method
US3436276A (en) * 1966-05-19 1969-04-01 Union Carbide Corp Slag removal method during thermochemical scarfing
US3455747A (en) * 1966-09-14 1969-07-15 Union Carbide Corp Thermochemical scarfing method and apparatus
GB1457438A (en) 1972-12-19 1976-12-01 Matsushita Electric Ind Co Ltd Metal removal method using an electric arc and gas jet and apparatus therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260433A (en) * 1977-11-24 1981-04-07 Centro-Maskin Goteborg Ab Method of forming and collecting slag products formed at a melting process, especially at gas planing
US4601762A (en) * 1983-01-20 1986-07-22 Centre De Recherches Metallurgiques-Centrum Voor Research In De Metallurgie Methods for conditioning metal products
US4765597A (en) * 1986-10-22 1988-08-23 L-Tec Company Scarfing nozzle

Also Published As

Publication number Publication date
IN148393B (enrdf_load_stackoverflow) 1981-02-07

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AS Assignment

Owner name: L-TEC COMPANY, 666 THIRD AVENUE, NEW YORK, NY 100

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNION CARBIDE CORPORATION;REEL/FRAME:004436/0460

Effective date: 19850712

Owner name: L-TEC COMPANY, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNION CARBIDE CORPORATION;REEL/FRAME:004436/0460

Effective date: 19850712

AS Assignment

Owner name: SECURITY PACIFIC BUSINESS CREDIT INC., A DE CORP.

Free format text: SECURITY INTEREST;ASSIGNOR:L-TEC COMPANY A NY LIMITED PARTNERSHIP;REEL/FRAME:004445/0860

Effective date: 19850716

AS Assignment

Owner name: L-TEC COMPANY, EBENEEZER ROAD, POST OFFICE BOX F-6

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNION CARBIDE CORPORATION, A CORP OF NY.;REEL/FRAME:004610/0384

Effective date: 19860828

Owner name: L-TEC COMPANY, SOUTH CAROLINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNION CARBIDE CORPORATION, A CORP OF NY.;REEL/FRAME:004610/0384

Effective date: 19860828

AS Assignment

Owner name: ESAB AB, A SWEDISH CORP., SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:L-TEC COMPANY;REEL/FRAME:005491/0029

Effective date: 19901030